Voyager 1 is going about 17 km/s. It's the probe with the fastest speed away from the sun. Alpha Centauri is 4.37 light years away. That trip would take about

Voyager 1 is going about 17 km/s. It's the probe with the fastest speed away from the sun. Alpha Centauri is 4.37 light years away. That trip would take about 77,000 years, were Voyager 1 pointed the right direction.